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| Both sides previous revisionPrevious revisionNext revision | Previous revisionLast revisionBoth sides next revision | ||
| renderpass [2020/01/09 14:09] – [Start / End] admin | renderpass [2020/01/09 14:24] – [How to use] admin | ||
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| Line 305: | Line 305: | ||
| To use a render target from the framebuffer object, we need to clear it on each rendering step. | To use a render target from the framebuffer object, we need to clear it on each rendering step. | ||
| After that, we have to activate it for shader usage by the Prepare() method. | After that, we have to activate it for shader usage by the Prepare() method. | ||
| + | The prepare method will activate all supplied render targets for shader computation. | ||
| + | If you forget to execute prepare() only the default target Color_0 will be available for computation. | ||
| We do this all in the render-pass callback method (DoOnRenderPass), | We do this all in the render-pass callback method (DoOnRenderPass), | ||
| Line 319: | Line 321: | ||
| FFBO.Clear(Point(AContext.Width, | FFBO.Clear(Point(AContext.Width, | ||
| LTarget, TAlphaColorF.Create(0, | LTarget, TAlphaColorF.Create(0, | ||
| - | | ||
| - | // bind again the framebuffer object | ||
| - | FFBO.Bind(); | ||
| | | ||
| // activate the specific render target buffer for shader | // activate the specific render target buffer for shader | ||
| Line 336: | Line 335: | ||
| begin | begin | ||
| [...] | [...] | ||
| - | | ||
| - | // unbind framebuffer object | ||
| - | FFBO.Unbind(); | ||
| end; | end; | ||
| </ | </ | ||
| Line 398: | Line 394: | ||
| FMyRenderPass.Enabled := true; | FMyRenderPass.Enabled := true; | ||
| </ | </ | ||
| + | |||
| + | Next step: [[shadows|Shadows]] | ||